yetter



(No Model.)

J. O. VETTER.

INDUCTION 0011, FOR MEDICAL USE.

N0. 330,531. Patented Nov. 1'7, 1885.

UNITED "STATES,

ATENT FFICE. I

JosnPH o. VE'TTER, onNE YORK, N. Y.

INDUCTION ICOIL FOYR MEDICAL use.

SPECIFICATION forming part of Letters Patent No. 330,531, dated November 17,1885.

Application filed May 16, 1885. Serial N0.158,962. (N0 model.)'

To all whom it mayhconcern:

Be it known that I, J osnPH G. VETTER, of the city and county of New York, in the State of New York, have invented a new and useful Improvement in Electro-Magnetic Instruments for Medical Use, of which the following is a specification; b

The object of my invention is to provide a very simple induction-coil apparatus for medical use, and particularly for home use by in experienced persons, in which is employed a simple sal-ammoniac battery. Such a battery is very desirable for use by inexperienced persons, because it does not require frequent cleaning and rinsing, as do batteries in which are used bichromate' of potash, sulphate of copper, bisulphate of mercury, and" other strong solutions,'and because the sal-am moniac solution is harmless to the parts of the instrument and to the persons using it, as compared with the stronger solutions. The sal-ammoniac battery is, however, of large size, as compared with the other batteries above referred to and my inventionhas for its aim to provide an apparatus which isvery compact and easily carried, and which has the inductioncoil and all other parts contained and concealed within the case, but capable of adjustment from the outside of the case. These results are secured by theinstrument or apparatus illustrated in the accompanying drawings; and the invention consists in novelcombinations of parts, hereinafter described, and pointed out in the claims.

In the drawings, Figure l is a vertical section of an instrument or apparatus embodying my invention. Fig. 2 is a front elevation of the apparatus. Fig. 3 is-a plan thereof, the top or cover of the case being removed and the electrodes withdrawn from the case; and Fig. 4 is an inverted plan of the core of the induction-coil and a top piece or stock from which it depends. 1

Similar letters of reference designate corresponding parts in all the figures.

A designates the case, which may be of wood, covered with leather or other material to give it an attractiveIappearance, and which has a top or cover, A, hinged at a, and held closed by a hasp and button, a a or other suitable catch.

B designates the glass or other jar of an ordinary sal-ammoniacbattery having zinc and element'has at its top a binding-screw, b, or

other suitable means of attachment for the conductor 22*, and the carbon'has a similar binding-screw, a, or other means of attachment for the-conductor 0*. The jar B is held in place between the back of the case A and retaining strips or blocks 0, which are held in place by upright cleats or ribs d, secured to the sides of the case. I The jar ispreferably supported or cushioned by corrugated paper or other elastic or yielding packing material,d*,at the bottom and upright faces of the parts which hold it in place, as shown in Figs. 1 and3. At the'front of the jar B is an upright partition, A which is or may be fixed in the case,

and upon this rests atop piece or stock-piece,

D, made in the form of a small board or plate, of wood or other non-conducting material, from which depends the induction-coil E. The primary wires of this core are fixed in the top piece, D, and at the upper side thereof are a vibrator, F, of suitable construction, sockets b c, to receive the battery-conductors b* 0*, and other sockets, e 6 (2*, to receive the electrode-conductors, hereinafter described. The wires of the induction-coil E, the vibrator F, and the several metallic sockets b c e e e", above mentioned, are all suitably connected to produce the proper circuits by means of wires in or on the top piece, D, and as these wires or connections are well understood, and may be arranged by any electrician, I have not thought it necessary to show them. The coil E depends in the compartment of the case forward of the partition A; and G designates the metallic sleeve or tube, adjustable on the coil, to vary the strength of the current.

In the front of the case is a slot, f, and an adjacent graduated scale, f, and in this slot is fitted a pin, 9, projecting from the sleeve G, and having at the outside of the case a knob or handle, 9, and an attached pointer or indicator, 9*. (Shown in Fig. 2.) By means of the pin g and knob g the sleeve G may be slid up and down the coil E, to bring it to a definite desired position, to be determined by the scale f, and the sleeve will be held in the position to which it may be adjusted by a spring, which is attached to the tube or sleeve G, and has frictional contact with the carbon or other equivalent elements. The zinc inner side of the case, as shown in Fig. 1. A spring might be otherwise arranged to form a friction-brake to hold the sleeve after adj ustment. The pin and knob g g constitute a hand-piece for moving the sleeve or tube G.

As shown in Fig. 1, the sleeve or tube G is adjusted to its lowest position entirely clear of the coil E, and in order to prevent the sleeve from striking the end of the coil when raised I place upon the coil a tube, E", which projects considerably beyond the lower end of the coil and downward well into the sleeve or tube G. This tube forms a guide to the sleeve G, and may be of paper or other nonconduct-ing material. Paper is advantageous, because it has little thickness. The upper end of the paper guide-tube E may be turned outward, or fringed to form a flange, h, which is secured, by adhesive substance or otherwise, to the under side of the top piece, D, as best shown in Fig. 4, but also in Fig.

1. When the sleeve G is raised toits topmost position, its upper end, if it strikes at all, will bear on the flange or fringed and spread end h of the paper guide-tube E, and therefore will not make metallic contact with any wires which may be exposed on the under side of the top piece, D.- In the rear edge of the top piece, D, which overhangs the partition A, are semicircular notches t, and in the space between the top piece and the jar B are slipped the electrodes H, they being confined by the said notches i. The electrodes H have attached conductors j, which are wound around their handles when packed in the case, as shown in Fig. 1, and which may be placed in the sockets e c e" when the electrodes are in use, as shown in Fig.3. At the back of the case A are corner-pieces k, in which are sockets b 0 that receive the conductors Ifl 0*, as shown by dotted lines in Fig. 3, when the apparatus is not in use, and from which the conductors may be withdrawn and inserted in 'the sockets b c, as shown by full lines in Fig. 3, when the apparatus is to be used. The corner-pieces k serve to stay the case, and by their sockets b 0 hold the conductors and keep them from flying about when the apparatus is not in use.

secure by Letters Patent, is-

1. The combination, with a battery and a case therefor having in it a slot, of an induction-coil and sleeve or tube movable one relatively to the other and both contained within the case, and a hand-piece attached to the movable part and projecting through and "movable in said slot, substantially as herein described.

2. The combination, with a battery and the .case therefor having in it the slot f and adjacent scale, of the depending induction-coil E and the sliding sleeve or tube G, with its pin and knob g g movable in said slot, substantially as herein described.

3. The combination, with an induction-coil and sleeve, one being movable lengthwise relatively to the other, of a non-conducting guide-tube projecting beyond the end of the coil and into the sleeve, substantiallyas herein described. k

4. The combination, with the top piece, D, and the coil E, secured thereto, of the nonconducting guide-tube E, having the flange h at one end and, projecting beyond the coil at the other end, and the adjustable sleeve G, substantially as herein described.

5. The combination, with the jar Band case A, of the top piece, D, having semicircular recesses 13, the induction-coil and sleeve E G, de-

pending from and below the top piece, and

the electrodes H, arranged between the jar and top piece and confined by saidrecesses z, substantially as herein described.

6. The combination of the case A, the battery-jar B, with its elements and conductors b* 0*, and corner-pieces k at the back of the case, forming stays thereto, and provided with sockets b c'ifor the conductors when not in use, substantially as herein described.

7. The combination of the case A, the jar B, confined in place between the strips or pieces 0 and the back of the case, the top 1 piece, D, with its depending induction-coil E,

and the adjustable sleeve G therefor, and the electrodes H, arranged between the top piece, D, and the jar, all substantially as described.

J. G. VETTER.

Witnesses FBEDK. HAYNES, MATTHEW PoLLocK. 

